This mod was heavily inspired by https://mods.factorio.com/mods/Mylon/Concreep - And Mylon has ok'ed using parts of his code for this.

It requires https://mods.factorio.com/mods/cpeosphoros/CpeBusyBots to work.

If you have a large number of roboports or construction bots, and/or already have a large area paved with concrete, Concreteer may lag a bit. See Busy Bots description for a mean to alleviate that.

As with Concreep, Concreteer will try to put idle construction robots to work laying down concrete around roboports. Simply make the right kind of concrete available to your logistic network and they will fill everywhere they can reach with concrete. Roboports will mimic the 4x4 pattern underneath them and tile it. This includes hazard concrete and extra kinds of concrete, like those added by Colored Concrete.

Differently from Concreep, the pattern Roboports will mimic is dynamically checked each so many cycles (configurable in config.lua), not only when a roboport is created. Also, Concreteer will not touch your trees - fot that, use https://mods.factorio.com/mods/cpeosphoros/CpeTreeCutter

Changelog:
0.14.4
- Corrected badly edited config.lua

0.14.3
- Compatibility with Busy Bots 0.14.4
- Better performance
- Filtered log messages
- Debug logging off by default

0.14.2
- Compatibility with Busy Bots 0.14.3
- Better performance
- Treated some corner case Lua lifecycle problems.
- More detailed log